Tendencias tecnológicas de depuración de lixiviados en rellenos sanitarios iberoamericanos

Zafra-Mejía, Carlos Alfonso; Romero-Torres, Diego

doi:10.22395/rium.v18n35a8

Cited by 3 publications

(2 citation statements)

References 14 publications

(25 reference statements)

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“…A global comparative analysis with mature landfills [4,[40][41][42][43][44][45][46] showed that, on average, the BOD 5 (32.8-19,402 mg/L) and COD (2198-32,358 mg/L) concentrations in the study landfill were within the same range of variation (Table 1). However, concentrations of NH 4 , Cd, Hg, and Pb were, on average, 3.22, 1.21, 6.26, and 4.13 times higher compared to reference landfills, respectively.…”

Section: Untreated Leachatementioning

confidence: 99%

Analysis of the Landfill Leachate Treatment System Using Arima Models: A Case Study in a Megacity

2021

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Leachate has been reported as the most significant source of landfill pollution. Predicting the characteristics of untreated and treated leachate may be useful during optimal scheduling of leachate treatment systems. The objective of this paper is to show an analysis of the operation of a landfill leachate treatment system in a Latin American megacity (Bogota, Colombia) by means of auto-regressive integrated moving average (ARIMA) models. A comparative analysis of the leachate treated with respect to reference legislation is carried out. The influence of climate variables during the operation of the treatment system is also considered. The results suggest that the concentrations of heavy metals (HMs), BOD5, and COD in untreated leachate do not follow the same annual cycles observed for the quantity of solid waste disposed within the landfill. This difference is possibly associated with the hydraulic retention time (HRT) of the leachate inside the conduction and pre-treatment system (storage/homogenization ponds). The ARIMA analysis suggests an HRT of up to one month (AR = 1) for the HMs identified as indicators of untreated leachate (Cu, Pb, and Zn). It is noted that the removal efficiency of HM indicators of the operation of the leachate treatment plant (Fe and Ni) is probably conditioned by operations carried out over a period of one month (AR = 1). The high input concentration of these HM indicators may prevent changing their ARIMA temporal structure during leachate treatment. This is reflected in the low removal efficiencies for all HMs under study (average = 26.1%).

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Section: Untreated Leachatementioning

confidence: 99%

Analysis of the Landfill Leachate Treatment System Using Arima Models: A Case Study in a Megacity

2021

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“…erefore, this is a global environmental problem and adequately addressing, managing, and disposing of this waste pose enormous challenges [3][4][5]. In this context, solid waste management plays a vital role in urban planning [6,7]; in developing countries, the most economical technique for the final disposal of solid waste is landfills [8,9].…”

Section: Introductionmentioning

confidence: 99%

Analytic Hierarchy Process (AHP) for a Landfill Site Selection in Chachapoyas and Huancas (NW Peru): Modeling in a GIS‐RS Environment

López

Briceño

et al. 2022

Advances in Civil Engineering

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The evaluation of suitable landfill sites is a complex process and requires various legislative, technical, social, and environmental criteria. Therefore, this study provides a management tool for identifying suitable sites for landfills through the integrated use of the analytic hierarchy process (AHP), geographic information systems (GISs), and remote sensing (RS). Accordingly, fourteen subcriteria were identified and grouped into physical (7), environmental (3), and socioeconomic (4) criteria and were weighed using pairwise comparison matrices (PCMs). The weighted linear combination (WLC) approach of maps allowed us to generate models and submodels of land suitability. From the territory of the districts of Chachapoyas and Huancas, 0.9% (1.71 km2), 71.1% (141.89 km2), 21.0% (41.86 km2), 0.0%, and 7.7% (14.21 km2) have highly suitable, moderately suitable, marginally suitable, unsuitable, and restricted conditions, respectively, for a landfill site. Twelve highly suitable sites were identified, of which three were selected based on their shape and the minimum area required for the operation of the landfill until 2040. In fact, this study proposes a management tool for decision-makers (DMs) that improve the process of selecting landfill sites, supported by engineering and its applications for territorial sustainability.

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Enfoques, metodologías y variables de estudio de la percepción del riesgo en escenarios de pandemia: una revisión bibliográfica

Pardo

Peña

2023

Equidad Desarro.

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Las investigaciones acerca de las creencias, conocimientos y percepciones que poseen los sujetos acerca de las pandemias, enriquece los escenarios para la construcción de medidas integradoras de las perspectivas socioculturales en la gestión del riesgo, con el fin de atender episodios epidémicos. Esta revisión bibliográfica muestra los estudios de percepción del riesgo en escenarios de pandemia desarrollados alrededor del mundo en los últimos once años (2010-2021). Se encontraron y analizaron, los enfoques, herramientas, metodologías y variables, empleadas en los estudios de percepción y sus tendencias de distribución. Los resultados resaltan la presencia de tres enfoques de estudio: (i) sociocultural, (ii) social y (iii) cultural. Además, se evidenció que las variables para el estudio de percepción se agrupan en cinco grandes categorías: (i) información personal (96 %), (ii) cognición sobre el riesgo (92 %), (iii) afectación personal de la amenaza (66,5 %), (iv) confianza institucional (75 %), y (v) cognición cultural (62 %). El enfoque metodológico más empleado en los estudios de percepción fue el cuantitativo (73,1 %). Las herramientas identificadas fueron: encuestas (75,0 %), entrevista semiestructurada (15,4 %), revisión narrativa (11,5 %), grupos focales (9,6 %) y bola de nieve (2,0 %). Finalmente, las tendencias de distribución muestran que, el mayor número de estudios se realizó en Asia (28,8 %), seguido de América y Europa (23,1 %) y África (5,8 %). Se concluye que, la percepción del riesgo en escenarios de pandemia requiere de un enfoque sociocultural, para integrar los factores sociales, las vulnerabilidades y los sesgos culturales como modeladores de la percepción y actuación de los sujetos frente a los riesgos epidémicos actuales.

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Tendencias tecnológicas de depuración de lixiviados en rellenos sanitarios iberoamericanos

Cited by 3 publications

References 14 publications

Analysis of the Landfill Leachate Treatment System Using Arima Models: A Case Study in a Megacity

Analysis of the Landfill Leachate Treatment System Using Arima Models: A Case Study in a Megacity

Analytic Hierarchy Process (AHP) for a Landfill Site Selection in Chachapoyas and Huancas (NW Peru): Modeling in a GIS‐RS Environment

Enfoques, metodologías y variables de estudio de la percepción del riesgo en escenarios de pandemia: una revisión bibliográfica

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